import underscore from "underscore";
import "whatwg-fetch";

const DEFAULT_INIT = {
  credentials: "include"
};

class DataSource {
  constructor () {
    this._router = null;
  }
  setRouter (router) {
    this._router = router;
  }
  _fetch (requestOrURL, init) {
    init = init || {};

    let actualInit = underscore.extendOwn(
      underscore.clone(DEFAULT_INIT), init
    );

    return window.fetch(requestOrURL, actualInit).catch((error) => {
      this._router.push("/error/");
      throw new Error("FetchError: Unable to fetch");
    }).then((response) => {
      if (!response.ok) {
        let statusCode = response.status || "";

        this._router.push("/error/" + statusCode);
        throw new Error(
          "FetchError: '" + statusCode + "'" + " '" + response.statusText + "'"
        );
      } else {
        return response.json();
      }
    });
  }
  loadDashboardData () {
    return this._fetch("/api/v1/dashboard");
  }
  loadDayChartData (day) {
    return this._fetch("/api/v1/charts/day/" + day);
  }
  loadSessionData (day) {
    return this._fetch("/api/v1/sessions/" + day);
  }
  loadPlayerGameData (player, game) {
    return this._fetch("/api/v1/players/" + player + "/game/" + game);
  }
  loadPlayerGameChartsData (player, game) {
    return this._fetch("/api/v1/charts/player/" + player + "/game/" + game);
  }
  loadPlayersData () {
    return this._fetch("/api/v1/players");
  }
  loadPlayerStatsChartData (player, kind, mode) {
    return this._fetch(
      "/api/v1/charts/player/" + player + "/" + kind + "/" + mode
    );
  }
}

let sharedDataSource = new DataSource();
export default sharedDataSource;